中国肉牛的矿物质需要(中英文).ppt

Winter Tetany – Grass Tetany冬季抽搐病和青草缺镁病 Caused by magnesium deficiency due to: 镁的缺乏是由于： Too little magnesium in the diet日料中镁太少 Too much potassium in the diet日料中钾太多 Too much potassium may also cause milk fever (calcium deficiency) 太多钾可能会引起产乳热（钙缺乏） Winter Tetany – Grass Tetany冬季抽搐病和青草缺镁病 Can occur when magnesium requirements are met and exceeded 当镁需求满足或超过会发生 Tetany ratio = potassium: (calcium + magnesium) 抽搐比率=钾（钙+镁） Less than () 2.2 is O.K.少于（）2.2是可以的 Greater than 2.2 is a potential tetany problem 大于2.2会引起抽搐问题 TRACE MINERALS微量矿物质 Copper, zinc, iron, 铜、锌、铁 Manganese, cobalt, iodine锰、钴、碘 Selenium硒 Trace Elements: Probability Of eficiency微量元素：缺乏的可能性 Common deficiencies 普遍缺乏 Cobalt, copper, iodine, manganese, selenium and zinc钴、 铜、碘、锰、硒和锌 Trace Mineral Supplementation 微量矿物质补饲 建议妊娠母牛（毫克/公斤） ———————————————————————— 铜 10 铁 50 锰 40 硒 0.2 锌 40 ——————————————————————-—— Vitamins维生素 Essential organic compounds required in minute amounts Vitamins A, D E must be supplied in feed Vitamins B, K C are produced in the animals body A, D, E K are fat soluble B C are water soluble 基本有机化合物微量需求 维生素A、D和E必须在饲料中提供 维生素B、K和C在动物体内生产 A、D、E和K是脂溶性的 B和C是水溶性的 Vitamin A for Cows给母牛维生素A Most important vitamin in cattle nutrition. It must be added to cattle diets. Necessary for bone development, sight, maintenance of healthy skin tissues, reproductive functions. 是牛营养中最重要的维生素 必须添加到饲料中 对骨骼发育、视觉、皮肤组织健康维持、繁殖功能是必要的 Vitamin A For Cows给母牛维生素A Animals on green grass can store vitamin A in the liver and draw on it for 2-3 months. During the winter it is important to supplement Vitamin A for Cows. Cows require 40,000 before calving to 70,000 after calving International U